Now there doesnt appear to be anything between 800mah and 1600mah and thats a shame too because if you use one of the older minidv cameras mine is a d363 with the available sc memory card i use a class 4 2gb and you have a combination that will go an honesttogosh 2 hours of filming which i do when im filming the jvvarsity scrimmages at the high school without the potential for a tape stretching or breaking in the middle of the action and without all the drag of the tape transport sucking unnecessary juice out of the battery